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4-BROMO-2-FLUOROPHENYLISOTHIOCYANATE 96 synthesis

3synthesis methods
-

Yield:81171-71-3 98%

Reaction Conditions:

with sodium carbonate in chloroform at 20;

Steps:

4-Bromo-2-fluoro-1-isothiocyanatobenzene

Thiophosgene (66.5 mL, 86.8 mmol) was slowly added to a suspension of sodium carbonate (18.4 g, 17.4 mmol) and 4-bromo-2-fluoroaniline (15.0 g, 78.9 mmol) in CHCl3 (500 mL). The mixture was stirred overnight at RT, then filtered. The filtrate was concentrated to give product as a white solid (18.0 g, 98%). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 7.05 (t, J=8.22 Hz, 1 H) 7.22 - 7.28 (m, 1 H) 7.34 (dd, J=9.10, 2.05 Hz, 1 H).

References:

Frohn, Mike;Cee, Victor J.;Lanman, Brian A.;Pickrell, Alexander J.;Golden, Jennifer;Rivenzon-Segal, Dalia;Middleton, Scot;Fiorino, Mike;Xu, Han;Schrag, Michael;Xu, Yang;McElvain, Michele;Muller, Kristine;Siu, Jerry;Bürli, Roland [Bioorganic and Medicinal Chemistry Letters,2012,vol. 22,# 1,p. 628 - 633] Location in patent:supporting information; experimental part